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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2109250Generated: October 26, 2026

Ethyl Acetoacetate → 5-Methyl-1-pyridin-2-yl-1H-pyrazole-4-carbaldehyde

https://huagongshe.com/reaction/2109250

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl AcetoacetateHCID 8868—
Reactant2-HydrazinopyridineHCID 78645—
Reactant5-cyclopropyl-1-(propan-2-yl)-1H-pyrazole-4-carbaldehydeHCID 19620135—
Product5-Methyl-1-pyridin-2-yl-1H-pyrazole-4-carbaldehydeHCID 21097352—

Reaction Steps

5-Methyl-1-pyridin-2-yl-1H-pyrazole-4-carbaldehyde was prepared from ethyl acetoacetate and 2-pyridyl hydrazine in the same manner as 5-cyclopropyl-1-isopropyl-1H-pyrazole-4-carbaldehyde (Example 49).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07514458B2
Source datasetuspto-grants-2009_04
ORD IDord-3060dd62999149898f6d6c90c37b0526
Source noteuspto-grants-2009_04